Kurz, Thomas

[["dc.bibliographiccitation.artnumber","113019"],["dc.bibliographiccitation.journal","New Journal of Physics"],["dc.bibliographiccitation.volume","14"],["dc.contributor.author","Schanz, Daniel"],["dc.contributor.author","Metten, Burkhard"],["dc.contributor.author","Kurz, Thomas"],["dc.contributor.author","Lauterborn, Werner"],["dc.date.accessioned","2018-11-07T09:03:30Z"],["dc.date.available","2018-11-07T09:03:30Z"],["dc.date.issued","2012"],["dc.description.abstract","The dynamics of the medium within a collapsing and rebounding cavitation bubble is investigated by means of molecular dynamics (MD) simulations adopting a hard sphere model for the species inside the bubble. The dynamics of the surrounding liquid (water) is modelled using a Rayleigh-Plesset (RP)-type equation coupled to the bubble interior by the gas pressure at the wall obtained from the MD calculations. Water vapour and vapour chemistry are included in the RP-MD model as well as mass and energy transfer through the bubble wall. The calculations reveal the evolution of temperature, density and pressure within a bubble at conditions typical of single-bubble sonoluminescence and predict how the particle numbers and densities of different vapour dissociation and reaction products in the bubble develop in space and time. Among the parameters varied are the sound pressure amplitude of a sonoluminescence bubble in water, the noble gas mixture in the bubble and the accommodation coefficients for mass and energy exchange through the bubble wall. Simulation particle numbers up to 10 million are used; most calculations, however, are performed with one million particles to save computer run time. Validation of the MD code was done by comparing MD results with solutions obtained by continuum mechanics calculations for the Euler equations."],["dc.description.sponsorship","Open-Access-Publikationsfonds 2012"],["dc.identifier.doi","10.1088/1367-2630/14/11/113019"],["dc.identifier.isi","000311094500003"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/8491"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/24910"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Iop Publishing Ltd"],["dc.relation.issn","1367-2630"],["dc.relation.orgunit","Fakultät für Physik"],["dc.title","Molecular dynamics simulations of cavitation bubble collapse and sonoluminescence"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","395"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Experiments in Fluids"],["dc.bibliographiccitation.lastpage","408"],["dc.bibliographiccitation.volume","48"],["dc.contributor.author","Kroeninger, Dennis"],["dc.contributor.author","Koehler, Karsten"],["dc.contributor.author","Kurz, Thomas"],["dc.contributor.author","Lauterborn, Werner"],["dc.date.accessioned","2018-11-07T08:45:27Z"],["dc.date.available","2018-11-07T08:45:27Z"],["dc.date.issued","2010"],["dc.description.abstract","The velocity field in the vicinity of a laser-generated cavitation bubble in water is investigated by means of particle tracking velocimetry (PTV). Two situations are explored: a bubble collapsing spherically and a bubble collapsing aspherically near a rigid wall. In the first case, the accuracy of the PTV method is assessed by comparing the experimental data with the flow field around the bubble as obtained from numerical simulations of the radial bubble dynamics. The numerical results are matched to the experimental radius-time curve extracted from high-speed photographs by tuning the model parameters. Trajectories of tracer particles are calculated and used to model the experimental process of the PTV measurement. For the second case of a bubble collapsing near a rigid wall, both the bubble shape and the velocity distribution in the fluid around the bubble are measured for different standoff parameters gamma at several instants in time. The results for gamma > 1 are compared with the corresponding results of a boundary-integral simulation. For both cases, good agreement between simulation and experiment is found."],["dc.description.sponsorship","DFG-CNRS"],["dc.identifier.doi","10.1007/s00348-009-0743-1"],["dc.identifier.isi","000275460400002"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?goescholar/4172"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/20442"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","1432-1114"],["dc.relation.issn","0723-4864"],["dc.relation.orgunit","Fakultät für Physik"],["dc.rights","Goescholar"],["dc.rights.access","openAccess"],["dc.rights.uri","https://goedoc.uni-goettingen.de/licenses"],["dc.subject.ddc","530"],["dc.title","Particle tracking velocimetry of the flow field around a collapsing cavitation bubble"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]